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Moderate mag. 5.2 earthquake - Volcano Islands, Japan Region on Saturday, 18 August 2018

This quake was likely a foreshock of the 6.1 quake: Volcano Islands, Japan Region, 19 Aug 2018 04:05, which followed after 21 hours.
Moderate mag. 5.2 earthquake  - Volcano Islands, Japan Region on Saturday, 18 August 2018
18 Aug 07:37 UTC: First to report: GFZ after 9 minutes.
Date & time: Saturday, 18 August 2018 07:28 UTC
Magnitude: 5.2
Depth: 10.0 km
Epicenter latitude / longitude: 23.38°N / 143.54°E (Japan)
Nearest volcano: Nikko (130 km / 81 mi)
Nearby towns and cities:
1419 km (881 mi) SE of Tokyo (pop: 8,336,600)
Primary data source: GFZ
Estimated released energy: 4 x 1012 joules (1.11 gigawatt hours, equivalent to 951 tons of TNT) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
TimeMag. / DepthLocationSource
Sat, 18 Aug 07:28 UTCM 5.2 / 10 kmVolcano Islands, Japan RegionGFZ
Sat, 18 Aug 07:28 UTCM 5.2 / 20 kmVOLCANO ISLANDS, JAPAN REGIONEMSC
Sat, 18 Aug 07:28 UTCM 5.2 / 31.1 kmVolcano Islands, Japan RegionGeoAu
2018-08-18 17:28:31 +10:00 (18 Aug 07:28:31 UTC)M 5.2 / 18.4 km- 257km SE of Iwo Jima, JapanUSGS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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11035.1 km NE of epicenter [Map] / Very weak shaking (MMI II) : Had arisen for drink of water. Looked at clock. Felt bed shake when lying in bed. poop

Earlier earthquakes in the same area since 1900

Moderate mag. 5.2 earthquake - Volcano Islands, Japan Region on Saturday, 18 August 2018

Map of earlier quakes

 

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